Combined slide-gage and try-square.



No. 685,634 Patented Oct. 29, I9OI.

' F. OLSON & J. OPLANO.

COMBINED SLIDE GAGE AND TRY SQUARE.

(Application filed July 3, 1900.)

(No Model.)

ir' z M 7////%""' If Wm Jv.

3 1 1 1, 4 Ie JV (D UNITED STATES PATENT OFFICE.

FREDRIOK OLSONAND JULIUS OPLAND, OF CALUMET, MICHIGAN.

COMBINED SLIDE-GAGE AND TRY- -SQUAR E.

'srncinoAtrrou forming part of Letters Patent No. 685,634, dated October 29, 1901; Application filed July 3, 1900. Serial No. 22,428. (a model.)

To all whom it may concern:

Be it known that we, FREDRIOK OLSON and JULIUS OPLAND, citizens of the United States, residing at Calumet, in the county of Houghton and State of Michigan, have invented certain new and useful Improvements in a Combined Slide-Gage and Try-Square; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

Our invention relates to improvements in a combined slide gage and try-square that allows, in addition to the usual applications of a try-square, parallel lines to be scribed at the same time, adjustment of one of the scribing-points and the cross piece or guide of the gage, rigid construction of the scale-plate, clamping-guides, removable scribing-needles sharpened to semicircular edged wedges, a thumb-screw operating to set the cross-guide, and a removable needle scribe-block, allowing scribing on both sides of the cross piece or guide. These objects are accomplished by means of the various constructions shown in the accompanying drawings, in which Figure 1 is a perspective of the improved combined gage and try-square, showing all the parts in place. Fig. 2 is a top view with cross piece or guide in section, showing the clamping mechanism. Fig. 3 is an end view with gage-scale in section and cross-guide partly in section. Figs. 4, 5, 6, and 7 are details of the scribing-needles and means of attachment and adjustment. Figs. 8, 9, and 10 show possible constructions of the gagescale. Fig. 11 shows a perspective of one of the guides, showing channel therein and end lugs for retaining the same in position.

Similar letters refer to similar parts throughout the several views.

In Fig. 1, H is the gage-scale, of metallic or other'suitable material, with graduations thereon. B is the cross-guide, made of substantial material, usually wood, sliding back and forth on the gage-scale, held true thereto by means of two guide blocks or plates F, against one of which a pressure-plateP presses when itis desired to make the crossguide stationary. This is done by means of a thumb screw J, usually of metal, threaded andpassing through a nut N of substantial material, preferably metal, introduced into a cavity in B,c1osed, preferably, by one of the two veneer plates K or M. The veneer plates K, L, and M serve three purposes-to take up the wear coincident with use tending to destroy the accuracy of the gage, to protect the crossguide from breakage on dropping or accidental contact with objects, and in the case of the plates K and M to form a solid backing for the guide-blocks F when such are operatin g to clamp the cross-guide on the gage-scale. The removable needle-block O, of suitable material, is provided with an aperture along its center parallel with its upperand lower edges, through which the gage-scale Hslides. A thumb set-screw I, with channeled head, gives means of setting the removable needleblock on the gage-scale plate. Above and below the center part of the apertureare twochannels cut to allow the block to be removed and placed at any point on the gage-scale, either before or behind the cross-guide, allowing two parallel lines to be scribed with reference to any straight edge along which the cross-guide may slide. The needle-point, carried by the removable needle-block O, is held in place by a set-screw h. In construction and operation the needle-points on the blocks arethe same. A detailed description of a needle-point isgiven in the reference to stationary block D. (Shown in Figs. 1 and 5.) The stationary needle-point block D is attached by brazing, soldering, or other means, according to the material used, to the gage-scale. On its end a set-screw h, with channeled head for screw-driver, holds a needle-pointG in place. The needle-point in the construction shown has two principal advantages. The semicircular wedge shape allows it to ride over the material being worked, scribing the same without digging out the material and jumping the work, and also strength is gained by this particular form, a sharp flat edge breaking more easily.

Figs. 6 and 7 show the construction described.

We do not hold ourselves to any particular construction as to the gage-scale and ribs,

' any of those shown in Figs. 8, 9, and 10 being on the right, which clamps against the gagescale H, and thereby clamps the gage-scale.

Having thus described our invention, what we claim, and desire to secure Letters Patent upon, is-

1. A combined double marking slide-gage and try-square, consisting of a graduated gagescale with solidly-attach ed central ribs above and below, an attached needle-point, an adjustable needle-point, an adjustable crossguide with metal-veneered wearing-surfaces, a square channeled corner of cross-guide giving a terraced sliding surface level with the needle-points, channeled guide-blocks held loosely within and projecting beyond the sides of the cross-guide, a set-screw attached to the cross-guide for clamping the same to the gagescale, substantially as set forth.

2. The combination in a combined double marking slide-gage and try-square, of a solid graduated gage scale with ribs projecting above and below the scale, the scale having a solidly-attached block carrying a detachable and adjustable needle-point, and adjustable block having apertures channeled through it to fit the gage-scale and ribs, this adjustable block in turn, carrying detachable and adjustable needle-points, an adjustable cross-guide with metal-veneered wearing-s11 rfaces, a square channeled corner of crossguide giving a terraced sliding surface level with the needle points, channeled guideblocks held loosely within and projecting beyond the sides of the cross-guide, a set-screw attached to the cross-guide for clamping the same to the gage-scale, substantially as set forth.

3. The combination in a combined double marking slide-gage and try-square of a grad uated scale, with ribs above and below, with a solidly-attached block carrying a detachable and adjustable needle-point, and an adjustable block having apertures channeled through it to fit the gage-scale and ribs, this adjustable block in turn carrying a detachable and adjustable needle-point, an adjust able cross-guide with metal-veneered wearing= surfaces, a square channeled corner of the cross-guide giving a terraced sliding surface level with the needle-points,channeled clam pacting guide-blocks of U -shaped central crosssection and with lugs on back of ends loosely but securely seat the guide-blocks against the sides of the cross-guide out of which the guideblocks project, a set-screw on the cross-guide threaded with milled and channeled head, a metallic nut held within the cross-guide for anchoring said set-screw,a pressure-distributing bearing-plate between the end of setscrew and the clamp-actingguide-blocks, substantially as set forth.

4. The combination in a combined double marking slide-gage and try-square of a gradu ated scale with ribs above and below, with a solidly-attached block carrying a detachable and adjustable semicircular-edged, wedgepointed needlepoint, an adjustable crossguide with metal-veneered wearing-surfaces, a square channeled corner of the cross-guide giving a terraced sliding surface level with the needle points, channeled clamp acting guide-blocks of U-shaped central cross-section and with lugs 011 back of ends to loosely but securely seat the guide-blocks against the sides of the crossguide out of which the guideblocks project, a set-screw on the cross-piece threaded with a milled and channeled head, a metallic nut held within the cross-guide for anchoring the set-screw, a pressure-distributing bearing-plate between the end of setscrew and the clamp-acting guide-blocks, sub stantially as set forth.

In testimony whereof we affix our signa tures in presence of two Witnesses.

FREDRIOK OLSON. JULIUS OPLAND.

Witnesses:

ALBERT J. MARcH, FRANCIS WARD. 

